orchestra rehearsal
Specifically a rehearsal where the orchestra and other performers (e.g., soloists, chorus, dancers) practice together, often for the first time. Common in opera, ballet, and musical contexts.
I'm nervous because tomorrow is the first orchestra rehearsal with everyone together.
Please make sure to study your parts thoroughly before the orchestra rehearsal.
Standard spelling using katakana オケ (abbreviation of オーケストラ) and kanji 合わせ.
Variant with 合せ instead of 合わせ; both are used, but 合わせ is more common in modern writing.
Compound of オケ (abbreviation of オーケストラ 'orchestra') and 合わせ (noun form of 合わせる 'to put together, match').